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Washington

Past Producer in Mariposa county in California, United States with commodities Gold, Copper, Lead, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10102864
MRDS ID M009422
Record type Site
Current site name Washington
Alternate or previous names Jenny Lind, Red Cloud
Related records 10163582

Geographic coordinates

Geographic coordinates: -120.2246, 37.52632 (WGS84)
Elevation 312
Relative position 1.5 MI NE HORNITOS

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hornitos(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005S 016E 04,05 California

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Ankerite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock

Economic information

Ore body information

  • Strike N 40 W
    Dip 70 - 75 SW
    Thickness 3.66M
    Depth to top 0M

Comments on the geologic information

  • WALL ROCKS ARE MAINLY MICACEOUS AND AMPHIBOLE-BEARING SCHISTS AND DARK QUARTZ-BIOTITE HORNFELSES OF UPPER JURASSIC AGE. VEIN IS ACCOMPANIED BY A LIGHT-COLORED FELSITIC DIKE WHICH ADJOINS THE VEIN ON THE FOOTWALL SIDE IN THE SOUTHEAST WORKINGS AND ON THE HANGING WALL SIDE IN THE NORTHWEST WORKINGS. SMALL, IRREGULAR INTRUSIONS OF HORNBLENDIC GRANITIC ROCK PENETRATE TO THE SURFACE. MUCH OF THE METAMORPHIC ROCK HAS BEEN DERIVED FROM PLATY, TUFFACEOUS METASEDIMENTS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1850

Mining district

District name Hornitos

Ownership information

  • Type Operator
    Owner Pacific Mining Co.

Production statistics

  • Year 1942
    Period 1939 - 1942
    Material PB
    Accuracy Accurate
    Description Cp_Grade: ^0.14 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 4g/mt
  • Year 1942
    Period 1939 - 1942
    Material CU
    Accuracy Accurate
    Description Cp_Grade: ^0.064 Lb Pb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Lead Lead 29g/mt

Comments on the production information

  • 1851 6 STAMP MILL PRODUCED 1000 OZ AU/DAY. SOME BONANZA ORE, BUT RECENT PRODUCTION FROM ORE BETWEEN $6.50 - $7/TON. ORE AVG. $25/TON AT $13/OZ IN MIDDLE 1870'S .

Workings at the site

  • Type of workings Underground
    Length 3218.6M
    Overall depth 457.2M

Comments on the workings information

  • 4 SHAFTS, EXTENSIVE DRIFTING & STOPES

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 179 - 181 , 314

  • Production

    BOWEN & GRAY 1957

General comments

Subject category Comment text
Deposit PATENTED ; INFO.SRC : 1 PUB LIT
Deposit VEIN, AVG 6 - 8 FT THICK. ALSO MASSES OF WALL ROCK IMPREGNATED W/AURIFEROUS PYRITE RUNNING 0.09 OZ AU/TON

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Bowman, J. And Albers, J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.